{{- $pc := .Site.Config.Privacy.GoogleAnalytics -}}
{{- if not $pc.Disable }}{{ with .Site.Config.Services.GoogleAnalytics.ID -}}
{{ if hasPrefix . "G-"}}
<script async src="https://www.googletagmanager.com/gtag/js?id={{ . }}"></script>
<script>
{{ template "__ga_js_set_doNotTrack" $ }}
if (!doNotTrack) {
	window.dataLayer = window.dataLayer || [];
	function gtag(){dataLayer.push(arguments);}
	gtag('js', new Date());
	gtag('config', '{{ . }}', { 'anonymize_ip': {{- $pc.AnonymizeIP -}} });
}
</script>
{{ else if hasPrefix . "UA-" }}
<script>
{{ template "__ga_js_set_doNotTrack" $ }}
if (!doNotTrack) {
	(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
	(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
	m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
	})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
	{{- if $pc.UseSessionStorage }}
	if (window.sessionStorage) {
		var GA_SESSION_STORAGE_KEY = 'ga:clientId';
		ga('create', '{{ . }}', {
	    'storage': 'none',
	    'clientId': sessionStorage.getItem(GA_SESSION_STORAGE_KEY)
	   });
	   ga(function(tracker) {
	    sessionStorage.setItem(GA_SESSION_STORAGE_KEY, tracker.get('clientId'));
	   });
   }
	{{ else }}
	ga('create', '{{ . }}', 'auto');
	{{ end -}}
	{{ if $pc.AnonymizeIP }}ga('set', 'anonymizeIp', true);{{ end }}
	ga('send', 'pageview');
}
</script>
{{- end -}}
{{- end }}{{ end -}}

{{- define "__ga_js_set_doNotTrack" -}}{{/* This is also used in the async version. */}}
{{- $pc := .Site.Config.Privacy.GoogleAnalytics -}}
{{- if not $pc.RespectDoNotTrack -}}
var doNotTrack = false;
{{- else -}}
var dnt = (navigator.doNotTrack || window.doNotTrack || navigator.msDoNotTrack);
var doNotTrack = (dnt == "1" || dnt == "yes");
{{- end -}}
{{- end -}}
